Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae0d621cd450cc61…

MALICIOUS

PDF

34.6 KB Created: 2021-07-06 12:07:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 15489ddc01a2c8944d0742771590bdd2 SHA-1: 6b72012abd17181d3ac196d6c13efd48209bf0c1 SHA-256: ae0d621cd450cc617654530a208f48b67c8b68e0b02b9b3efc8cbf78c9d7c4e5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded URLs that lure users with promises of game hacks and free in-game currency. The primary URL, http://netcdn.tw/app/479516143/minecraft-hacked-client-game-hack, is identified as a redirector to a malicious site. This indicates a social engineering tactic to trick users into visiting potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.tw/app/479516143/minecraft-hacked-client-game-hack PDF link annotation
    • http://www.sovtigaz.ru/f/files/free-links-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/coin-master-hack-facebook_GM406889139.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/how-to-get-free-robux-hack-script-2021_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/500-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/download-coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/ninja-simulator-roblox-cheats-for-xbox_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/pubg-uc-earn_GM1330123889.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/coin-master-hack-2021-android_GM406889139.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/roblox-hack-for-life-in-paradise_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/cheat-engine-65-roblox_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/how-to-get-free-robux-no-inspect-roblox_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/fearless-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31D9 22768 bytes
SHA-256: 3cd84a735d433f787174c4620efa7481014c012078380f4412ccbe7cedd9ea46
font_01_sfnt_off0000649b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x649B 18272 bytes
SHA-256: 0fd2c848ddb47650564216b877fc40ab0e75fea84b18b99b3308064a801b9109

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